Steam-boiler cleaner



(No Model.)-

A. JOHNSON.

STEAM BOILEROLBANER.

No; 243,912. Patented July 5,1881.

WITNESSES: v Q INVBNTOR:

ATTORNEYS.

UNITED STATES PATENT OFFICE.

ABRAHAM JOHNSON, OF YOUNG AMERICA, INDIANA.

STEAM-BOILER -CLEANER.

SPECIFICATION forming part of Letters Patent No. 243,912, dated July 5,1881.

Application filed April 6, 1881. (No model.)

To all whom "it may concern:

Be it known that I, ABRAHAM JOHNSON, of Young America, in the county ofCass and State of Indiana, have invented a new and Improved Steam-BoilerCleaner, of which the following is a full, clear, and exact description.

The object of this invention is to prevent the formation of scale insteam-boilers and to remove sediment therefrom.

The invention consists in combining a tube set in the head of boilerabove the water-level, a stuffing-box, and a removable tube passingthrough the first one, said removable tube having a bent end extendingnearly to the bottom of boiler, and provided with a blow-oft cock, ashereinafter described.

Figure 1 isa longitudinal sectional elevation of a boiler with theboiler-cleaner in position. Fig. 2 is a front-end elevation of the same.

Similar letters of reference indicate corresponding parts.

In the drawings, A represents a boiler, and B a tube inserted in thehead thereof, and provided with a suitable stuffing-box, B, throughwhich tube and stufling-box B B the pipe O is introduced horizontallyinto the boiler A, said pipe 0 having its inner end bent downward atright angles, as shown at a, and perpendicular to the axis of saidboiler A, so as to reach nearly-say to within about threequarters of aninch thereof-to the bottom of said boiler A; and around this lower endof said pipe 0 is a flange, 0, about eight inches in diameter, andconforming with the curve of the boiler-bottom, while on its outer endsaid pipe 0 is provided with a blow-off cock, D, and with across-handle, E, by means of which handle E said pipe 0 may be movedinward and outward through the tube and stuffing-box B B, so that itslower end shall be moved from one end to the other of the boiler A, andcan also be rotated to some extent upward on either side of thelongitudinal center of the boilerbottom.

In order to remove the sediment from the boiler A when the latter is inoperation, the blow-off cock D is opened and the pipe O moved inward andoutward by means of the handle E. The steam-pressure in the boiler willthen force the sediment from the bottom of the boiler up through thepipe O and out of the blow-off cock D. VVereit not for the flange O, thepressure of the steam in the boiler A. would force the water thereindownward in the direction of the arrows, Fig. 1, and out of the pipe 0,without thoroughly disturbing the sediment or scale on the bottom ofsaid boiler A 5 but the flange 0 causes the current of water to beforced between it and the boiler-bot tom, as indicated by the arrows,Fig. 2, whereby all the sediment and scale lying in the saidboiler-bottom must thereby be removed.

The pipe O is preferably entered above the water-line of the boiler A,so that it shall not become coated with scale and sediment, which wouldinterfere with its being moved back and forth, and, being entered abovethe furnacewall, can readily be applied to any boiler.

I-am aware that a sliding pipe with a blowofit' cock and in a perforatedtube arranged along the bottom of boiler is not new; but

What I claim is- The combination, with a boiler, of the tube B, insertedin the head above the water-level, the stuffing-box B, and the movabletube 0 passing through tube B, said tube 0 having a right-angled endextending nearly to the bottom of boiler, and provided with a blow-offcock, D, as shown and described.

ABRAHAM JOHNSON.

